John Mark R. Gulmayo
IT/CyberSecurity · Homelab · Calgary
IT/CyberSecurity · Homelab · Networking

Building real-world IT/CyberSecurity from Software Dev Background.

Entry-level IT Support candidate with hands-on homelab, networking, and troubleshooting experience. I manage a production-style homelab environment, troubleshoot hardware and network issues, and bring years of customer-facing experience. Transitioning into an IT Support or Helpdesk role where I can support users and keep systems running smoothly.

Linux Administration Windows 10/11 Networking Fundamentals VPN & Remote Access Homelab Server Management Hardware Troubleshooting Self-Hosted Services Customer Service & Technical Support Enterprise Wi-Fi Basics Google IT Support Certificate
View Projects

Actively seeking Shadowing/Internship IT/CyberSecurity.

Recent Achievement
Google IT Support Professional Certificate
Current Focus
CompTIA Security+ SY0-701
Enrolled at SAIT — Cybersecurity Analyst Program, September 2026
Latest Homelab Addition
N/A
N/A
Latest Project
Secure VPN Travel Router
Raspberry Pi 4 · OpenWrt · WireGuard · Mullvad

About Me

A customer service professional transitioning into IT.

I'm John, based in Calgary. After years in hospitality roles requiring strong communication, problem-solving, and reliability, I started building a homelab to learn IT/CyberSecurity hands-on experience. I now troubleshoot real hardware and software issues, run servers, and manage network services daily.

My goal is to leverage my customer service background and hands-on technical experience to transition into IT/CyberSecurity role. I am actively building enterprise network skills through a homelab running real infrastructure including managed switches, enterprise fiwalls and wireless systems. Currently studying for CompTIA Sec+, enrolled in SAIT's CyberSecurity Analysis program September 2026, and completing the Summer of CCNA 2026

Technical & Professional Skills

A blend of hands-on IT and customer-focused experience.

Technical Skills
Systems & OS Ubuntu Server 22.04 LTS
Windows 10/11 · macOS
Command Line (CLI)
Raspberry Pi · OpenWrt
Networking TCP/IP · DNS
VPN & Remote Access
Home Network Design
VLAN Basics
Services Pi-hole · Nextcloud
Plex · AMP
Tailscale · SSH
Mullvad WireGuard VPN
Hardware PC Building & Upgrades
RAM / CPU Installation
Drive Configuration
Hardware Troubleshooting
Professional Skills
  • First point of contact experience similar to IT helpdesk support.
  • Calm under pressure with clear and professional communication.
  • Team coordination in fast-paced environments.
  • Able to explain technical concepts to non-technical people.

Homelab Capabilities

Real-world IT operations running at home.

  • Support multiple wired and wireless client devices across managed switches and access points.
  • Maintain service availability across DNS, media, cloud storage, and game servers.
  • Troubleshoot network connectivity, service downtime, and device access issues.
  • Apply basic network segmentation and device management practices.
  • Use command-line tools and logs to diagnose system and service issues.
  • Manage and expand storage using Linux disk tools and fstab configuration.

Technical Projects

Hands-on projects demonstrating real IT experience.

Ubuntu Homelab Server
System Administration
  • Operate a Linux-based homelab hosting multiple always-on services for daily personal use.
  • Manage centralized DNS filtering with Pi-hole to improve network performance and block unwanted traffic.
  • Deploy and maintain Nextcloud for private file storage and remote access.
  • Run AMP for game server hosting and service management.
  • Host Plex Media Server for local media streaming.
  • Provide secure remote access using Tailscale and SSH.
  • Monitor and troubleshoot services, connectivity issues, and device access.
Ubuntu Server SSH Pi-hole Nextcloud Tailscale Plex
Secure VPN Travel Router
Networking & Security
  • Built a portable VPN router using Raspberry Pi 4 and OpenWrt for encrypted internet access.
  • Configured WireGuard VPN with Mullvad for privacy and security.
  • Implemented a firewall-based kill switch to prevent data leaks if the VPN connection drops.
  • Configured persistent routing and auto-start functionality for reliable operation.
  • Troubleshot hardware compatibility issues and researched alternative solutions.
  • Demonstrated systematic problem-solving through network diagnostics and log analysis.
OpenWrt WireGuard Mullvad VPN Linux Firewall Raspberry Pi
Enterprise Wi-Fi Lab
Networking
  • Learning enterprise access point deployment and configuration.
  • Planning VLAN segmentation and multiple SSIDs.
  • Studying PoE, RF behavior, and AP onboarding processes.
Enterprise Wi-Fi VLANs Networking
Custom Gaming PC Build
Hardware
  • Selected components and verified hardware compatibility.
  • Assembled full system with cable management.
  • Installed OS, drivers, and monitoring tools.
  • Troubleshot RGB, BIOS, and driver issues.
PC Building Hardware Troubleshooting

Experience

Hospitality roles with strong IT support overlap.

Valet Attendant
Residence Inn Calgary Downtown · 2024–Present
  • Acted as first point of contact for guests, resolving inquiries and concerns promptly.
  • Coordinated with front desk and other departments to ensure a smooth guest experience.
  • Maintained a professional and organized working environment at all times.
Houseperson / Guest Environmental Expert
Calgary Downtown Hotels · 2021–2024
  • Held progressive responsibilities requiring communication, attention to detail, and time management.
  • Used mobile apps including Zello and HotSOS for real-time task coordination.
  • Managed inventory and implemented efficient procedures for daily operations.
Education & Certifications
  • High School Diploma — St. Mary's High School
  • Google IT Support Professional Certificate
  • CompTIA Security+ SY0-701 — In Progress
  • SAIT Cybersecurity Analyst Program — September 2026
  • First Aid & WHMIS Certified
  • Class 5 Driver's License

Learning Roadmap

Where I'm heading next.

Short-Term (0–6 Months)
  • Land first IT Support or Helpdesk role in Calgary.
  • Pass CompTIA Security+ SY0-701 exam.
  • Continue expanding homelab with cybersecurity projects.
Mid-Term (6–18 Months)
  • Begin SAIT Cybersecurity Analyst Program — September 2026.
  • Grow into junior SysAdmin or Security roles.
  • Build SIEM, firewall lab, and penetration testing projects.
Long-Term (2+ Years)
  • Move into a cybersecurity analyst or network security role.
  • Earn advanced certifications such as CySA+ or CCNA.
  • Run a fully segmented enterprise-grade homelab environment.

Contact

Open to IT Support opportunities in Calgary.

Feel free to reach out if you'd like to talk about opportunities, my homelab projects, or how I can contribute to your team.